Easy opening sealed container



Oct. 29, 1935.

-W. F. PUNTE EASY OPENING SEALED CONTAINER Filed April 18, 1932 2Sheets-Sheet 1 Oct. 29, 1935. w pU EASY OPENING SEALED CONTAINER FiledApril 18, 1932 2 SheetsSheet 2 ""IIIIIM v Z'Snnentor MW 3 M PatentedOct. 29, 1935 PATENT OFFICE EASY SEALED CONTAINER William F. Punte,Syracuse, N. Y., assignor to Continental Can Company, Inc., New York, N.Y., a corporation of New York Application April 18, 1932, Serial No.605,960

1 Claim.

The invention relates to new and useful improvements in an easy openingcontainer wherein the cover is attached to the container for sealing thesame.

An object of the invention is to provide a construction of containerbody and cover whereby the cover may be secured to the container body bythe crimping of a depending flange in the cover to form projectingportions extending beneath the bead on the container body and tightlydrawing the cover into contact with a sealing material between the innerface of the cover and the outer face of the bead.

A further object of the invention is to provide a cover securing meansof the above type wherein the flange of the cover extends below theprojections and is flared outwardly so as to facilitate the insertion ofa cover lifter for removing the cover from the container.

A still further object of the invention is to provide a cover securingmeans of the above type wherein the cover is formed with a depressionextending into a container body and making frictional contact therewithto aid in the reclosure of the container by the cover after it has beenpried loose therefrom.

In the drawings- Figure 1 is a view partly in side elevation and partlyin section showing a container embodying the improvements;

Fig. 2 is a view partly in plan and partly in section through acontainer and cover just below the bead on the container body;

Fig. 3 is an enlarged vertical section showing the cover plate on thecontainer ready for attachment thereto;

Fig. 4 is a view similar to Fig. 3, but showing the depending flange ofthe cover as crimped and formed with projections which extend beneaththe bead on the cover for sealing the container;

Fig. 5 is a view similar to Fig. 3, but showing a slightly differentshaping of the depending flange before it is crimped to secure the coverto the container;

Fig. 6 is a view similar to Fig. 4, but showing a modified form ofdepending flange, wherein the lower edge portion is folded back tostrengthen and reinforce the same, and

Fig. 7 is a detail in side elevation showing a cover lifter which may.be used for releasing the cover from the container.

The invention consists in a container having a body portion which ispreferably cylindrical. The body portion at its upper end is rolledoutwardly to form a head. The cover consists of a central depressedportion adapted to extend into the container body to some distancevbelow the bead and make frictional contact with the inner wall of thecontainer body. The cover has a flange which extends over the bead, andthe a flange is provided with a depending portion which extends belowthe bead. A sealing material is placed in the cover between thedepending flange and the wall of the depression therein, and when thecover is applied,'this sealing material makes l0 contact with the outerface of the bead. The depending flange may have indentations formedtherein between the upper and lower edges, but

the projections formed by these indentations are spaced away from thevertical wall of the de- 15 pression in the cover, so that the cover maybe easily placed on the container and the bead en tered between theflange and the vertical wall. This depending flange of the cover may bestraight and free from indentations when the cover is placed on thecontainer body. After the cover is placed on the container body, it ispressed tightly against the sealing material, and the depending flangecrimped so as to provide projections extending beneath the bead andcontacting 25 therewith, so as to hold the cover in tight contact withthe sealingrnaterial.

Referring more in detail to the drawings, the container includes a bodyportion I which is rolled outwardly at the upper end thereof to form 30a head 2 lying on the outer wall of the container body, so that thecontainer body is of uniform diameter at the mouth thereof. ,The lowerend of the container 3 is preferably secured thereto by a double seam,and the wall of the container 35 body may have half beads 4 and 5reversely rolled therein to strengthen the same. The cover for thecontainer is provided with a central depression forming a vertical wall6. The depressed portion of the cover is adapted to flt within the 40mouth of the container and the outer face of the wall 6 of thedepression makes frictional contact with the inner face of the wall ofthe container body. The cover has an outwardly extending flange 1 whichoverlies the bead 2. The flange is 45 provided with a depending portion8 which is spaced away from the wall 6 so as to permit the free enteringof the bead 2 between the flange and the wall. A plastic sealingmaterial 9a is placed in the annular recess or groove formed between theflange 8 and the vertical wall 6 of the cover. and when the cover isplaced on the container y, this sealing material or gasket contacts withthe outer upper face of the bead. The de- P n ing flange 8, as shown inFig. 3, is free from indentations, but the lower end 9 thereof is flaredoutwardly slightly. After the cover has been placed on the container, itis then placed in a sealing machine which preferably includes a chuckextending into the depression in the cover, bearing against the verticalwall 6, and a crimp ing roll which is brought into engagement with thedepending portion 8 of. the flange contacting therewith between itsupper and lower ends so that when the crimping roll is forced inwardlyit will form closely spaced projecting portions i which extend beneaththe bead to a certain extent. Inasmuch as the cover is pressed firmlyagainst the sealing material, these projections will hold the cover inits sealed seated position. Below the projections, the flange projectsoutwardly and away from the body portion of the container. This lowerportion of the flange is free from the indentations formed by crimping,and therefore, a uniform space is provided between the lower portion 9of the flange and the wall of the container.

One form of cover lifter is shown'in Fig. 7 of the drawings. It consistsof a body portion ll having the end V I2 thereof curved away from thebody II and struck up from the body H is a tongue l3. The curved portionI2 is slipped over the cover directly above the bead, while the tongue13' isforced underneath the flange 8 and in between the lower end 9 andthe body wall of the container. This permits the tongue to extend wellup under the flange, and, when the lower end of the handle of the lifteris swung outward away from the wall of the container, it will pry orforce the flange 8 outwardly in the region where the lifter is applied,until the projections ID are released from the bead. By applying thelifter to the cover at diflerent places in succession, the cover may becompletely released from the container. This breaks the seal, and thecover may be readily removed from the container. It may also be readilyslipped on to the container, and the depression in the cover will extendinto the mouth of the container and frictionally hold the cover inplace. The cover, therefore, while slipped on to the container andfirmly secured thereto, may be easily released and serve as a reclosurefor the container.

In Fig. of the drawings, the depending flange 8 is provided with slightindentations [4 before it is applied to the container. Theseindentations I are not of sufiicient extent to in any way interfere withthe easy application of the cover to the container. They are primarilyfor the purpose of facilitating the crimping of the flange by the aid ofthe crimping roller. The projections ID are 5 formed in the same way asabove described, leaving the lower part of the flange substantially freefrom indentations and flaring outwardly to facilitate the application ofthe lifter.

In Fig. 6 of. the drawings, the lower portion of 10 the flange 8 isshown as bent back uponitself as indicated at l5. This is for thepurpose of strengthening the lower edge of the flange. The crimping ofthe flange takes place above this hemmed lower edge. The hemming of theedge prevents the springing of the same, and therefore, holds theprojections IIJ firmly in contact with the under face of the bead on thecontainer body. This insures a very tight seal of the container, and atthe same time, the cover may be readily pried loose and removed from thecontainer.

It is obvious that minor changes in the shaping of the parts may be madewithout departing from the spirit of the invention as set forth in theappended claim.

Having thus described the invention, what I claim as new and desire tosecure by Letters- Patent, is:

, An-easy opening sealed container comprising a body portion having theupper end of the wall thereof rolled outwardly to form a bead, a coverhaving a depression therein adapted to extend within the container andfrictionally contact with the inner face thereof, said cover having aflange overlying said bead and provided with a depending portionextending below said head, a sealing material disposed between said beadand the inner face of the cover portion overlying the same, saiddepending portion of the flange defining an unbroken surface, the lowerportion of the flange being bent outwardly and backwardly upon itselffor strengthening said lower edge of the flange and forming a smoothunbroken surface, the flange between the bent back portion and the upperportion thereof being formed with inwardly projecting rigid indentedportions adapted to extend beneath the head on the container body anddraw the cover into contact with the sealing material.

, WM. F. PUNTE.

